Neuromodulation : journal of the International Neuromodulation Society
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The issue of low back pain (LBP) is as common as it is perplexing. LBP is thought to be a chronic issue in approximately 10% of the U.S. population. This condition has wide-reaching social and economical reverberations. Despite the availability of modern diagnostic tools, the cause of the pain generator is often unidentifiable. The authors were asked to create an overview of the etiology of LBP for physicians who implant neurostimulation devices for the treatment of chronic pain patients. Some prevalence data, based on the current available literature, have been provided for the more common structural conditions causing LBP. However, a comprehensive review of prevalence of various conditions and their respective manifestations as LBP is beyond the scope of this article. ⋯ LBP is an extremely common condition associated, as a symptom, with various disease processes, regardless of their relationship with the lumbar spine or its innervation. This article underscores the broad nature of LBP as a symptom of many diagnoses. The primary conclusion reached by the authors is the most important recommendation by all mentors in medicine, which is to obtain a comprehensive history and perform a complete physical examination on each patient. Despite the fact that there is an emerging school of thought questioning the validity of the physical examination, this tool continues to be the current standard of care and used by a majority of clinicians around the world. The physician must analyze the information obtained from his/her history, physical examination, and diagnostic tools with the recognition of the broad nature of the differential diagnoses of LBP in order to be able to best treat the patient.
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Randomized Controlled Trial
Functional magnetic stimulation using a parabolic coil for dysphagia after stroke.
Recently, the usefulness of neuromuscular electrical stimulation and repetitive transcranial magnetic stimulation for poststroke dysphagia has been reported. However, there is no report that describes the effectiveness of functional magnetic stimulation (FMS) for dysphagia. The purpose of this study is to clarify the effectiveness of FMS for poststroke dysphagia. ⋯ FMS using a parabolic coil can potentially improve swallowing function in poststroke dysphagic patients.
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Percutaneous spinal cord stimulation electrodes have a propensity to migrate longitudinally, which is a costly complication that often compromises therapeutic effect. After implementing simple changes to our percutaneous electrode anchoring technique, we no longer encounter this migration. The current retrospective study updates previously reported results. ⋯ Improvements to our simple, inexpensive technique apparently have eliminated the most common complication of spinal cord stimulation.
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Stimulation of axons within the dorsal columns of the human spinal cord has become a widely used therapy to treat refractory neuropathic pain. The mechanisms have yet to be fully elucidated and may even be contrary to standard "gate control theory." Our hypothesis is that a computational model provides a plausible description of the mechanism by which dorsal column stimulation (DCS) inhibits wide dynamic range (WDR) cell output in a neuropathic model but not in a nociceptive pain model. ⋯ We offer a different set of necessary premises than gate control theory to explain neuropathic pain inhibition and the relative lack of nociceptive pain inhibition by using retrograde DCS. Hypotheses regarding not only the pain relief mechanisms of DCS were made but also regarding the circuitry of pain itself, both nociceptive and neuropathic. These hypotheses and further use of the model may lead to novel stimulation paradigms.
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Intrathecal baclofen (ITB) pump is a therapeutic option for persistent vegetative state and minimal conscious state patients that have associated spasticity. We investigated whether this treatment modality can affect their level of consciousness. ⋯ ITB might be associated with a significant improvement in the disorder of consciousness of two patients from a total of six that had a chronic ITB treatment.